Modellazione numerica dei meccanismi di riattivazione di grandi frane per scivolamento di terra: l’esempio della frana di Tolara, Appennino settentrionale

The time and space evolution of large earth slides in weak and complex rockmasses, that characterize thenorthern Apennines, is depending on geological setting and past climate. At the present the reactivation of theselandslides are due to mainly to hydrogeological and geotechnical features. This paper describes the hydrogeological andgeotechnical features of these landslides and the reactivations mechanism using coupled 2D hydrogeological numericalmodel and limit equilibrium analysis (Geoslope, 2004). The case study is the Tolara landslide (Modena Apennines) thatresumed activity in 2002. In this landslide some hydrogeological and geotechnical data have been collected from 2003 todate.